Record Display for the EPA National Library Catalog

RECORD NUMBER: 67 OF 148

OLS Field Name OLS Field Data
Main Title Effects of phosphorus loading on phytoplankton distribution and certain aspects of cytology in Saginaw Bay, Lake Huron /
Author Stoermer, E. F. ; Sicko-Goad, L. ; Frey, L. C.
Other Authors
Author Title of a Work
Sicko-Goad, L.
Frey, L. C.
CORP Author Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory,
Year Published 1983
Report Number EPA-600/3-83-075; PB83-250035; EPA-R-802780
Stock Number PB83-250035
OCLC Number 33078067
Subjects Phytoplankton--Environmental aspects--Michigan--Saginaw Bay. ; Water--Pollution--Michigan--Lake Huron.
Additional Subjects Phosphorus ; Phytoplankton ; Water pollution ; Saginaw Bay ; Sediment transport ; Dilution ; Cytology ; Distribution(Property) ; Lake Huron ; Correlation ; Lead(Metal) ; Cells(Biology) ; Biomass ; Inorganic phosphates ; Algae ; Diatoms ; Abundance ; Organic loading ; Water pollution effects(Plants)
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=91015DQ7.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-3-83-075 Headquarters Library/Washington,DC 12/17/2012
ELDD  EPA 600-3-83-075 3 copies NHEERL/MED Library/Duluth,MN 03/28/2012
NTIS  PB83-250035 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation ix, 124 p. : ill., charts ; 28 cm.
Abstract
Saginaw Bay has always been one of the more productive regions of the Great Lakes system. At the present time, it is also one of the most modified. Excessive nutrient and conservative element loadings are factors which have led to severe perturbation of primary producer communities in the region. Because of the physical dynamics of the bay region, idealized dilution gradients are grossly modified by transport of water masses and their entrained chemical constituents, fauna and flora into, as well as away from, the bay. However, there appears to be considerable selection among population components of the assemblages transported. For example, blue-green algae appear to be conserved in the bay while diatoms are subjected to great losses. The major effort in this investigation was to provide data on phytoplankton biovolume which would support a model of processes occurring in Saginaw Bay. A method of estimating the actual viable fraction of the cell volumes of representatives of the various physiological groups of phytoplankton found in Saginaw Bay was developed, and polyphosphate body formation was studied.
Notes
"PB83-250035." "EPA-600/3-83-075." "August 1983." Includes bibliographical references (p. 109-111). Sponsored by U.S. EPA. Photocopy.
Contents Notes
Saginaw Bay has always been one of the more productive regions of the Great Lakes system. At the present time, it is also one of the most modified. Excessive nutrient and conservative element loadings are factors which have led to severe perturbation of primary producer communities in the region. Because of the physical dynamics of the bay region, idealized dilution gradients are grossly modified by transport of water masses and their entrained chemical constitutents, fauna and flora into, as well as away from, the bay. However, there appears to be considerable selection among population components of the assembiages transported. For example, blue-green algae appear to be conserved in the bay while diatoms are subjected to great losses. The major effort in this investigation was to provide data on phytoplankton biovolume which would support a model of processes occurring in Saginaw Bay. A method of estimating the actual viable fraction of the cell volumes of representatives of the various physiological groups of phytoplankton found in Saginaw Bay was developed, and polyphosphate body formation was studied. Results showed that substantial phytoplankton populations were exported from the bay to Lake Huron. Under average wind conditions, most export occurred along the southern coast. These populations were then entrained in the general Lake Huron circulation and were spread down the Michigan coast southward from the bay. Under certain advective conditions, however, phytoplankton were discharged from the bay either to the north or directly offshore. Cytological analysis showed that many species sequestered phosphorus in excess of their immediate physiological needs, in the form of polyphosphate bodies. Populations exported from the bay also contained these polyphosphate bodies. Analysis of the polyphosphate bodies showed that significant quantities of certain toxic metals, notably lead, were incorporated into these inclusions. Analysis of the relationship of total phytoplankton cell volume to protoplasmic constituent volume showed that crude cell volume measurements furnished a poor estimate of actual living biomass in many populations. It was concluded that more refined techniques are required to correctly convert estimates of cell number to estimates of biomass.